./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_f434064a-8122-47da-9efb-9b97029449f9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:20:44,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:20:44,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:20:45,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:20:45,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:20:45,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:20:45,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:20:45,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:20:45,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:20:45,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:20:45,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:20:45,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:20:45,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:20:45,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:20:45,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:20:45,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:20:45,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:20:45,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:20:45,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:20:45,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:20:45,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:20:45,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:20:45,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:20:45,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:20:45,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:20:45,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:20:45,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:20:45,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:20:45,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:20:45,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:20:45,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:20:45,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:20:45,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:20:45,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:20:45,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:20:45,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:20:45,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:20:45,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:20:45,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:20:45,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:20:45,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:20:45,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-28 03:20:45,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:20:45,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:20:45,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:20:45,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:20:45,214 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:20:45,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:20:45,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:20:45,215 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:20:45,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:20:45,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:20:45,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:20:45,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:20:45,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:20:45,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:20:45,218 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:20:45,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:20:45,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:20:45,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:20:45,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:20:45,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:20:45,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:20:45,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:20:45,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:20:45,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:20:45,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:20:45,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:20:45,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:20:45,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:20:45,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:20:45,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:20:45,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:20:45,223 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_f434064a-8122-47da-9efb-9b97029449f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675300a4b632e073b31d1e86ab5660e0c5ab887b [2020-11-28 03:20:45,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:20:45,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:20:45,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:20:45,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:20:45,587 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:20:45,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/bin/uautomizer/../../sv-benchmarks/c/recursive/Fibonacci02.c [2020-11-28 03:20:45,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/bin/uautomizer/data/7950cf444/c73b4d559f3f471c84d7c9bbca150dab/FLAG878c60fee [2020-11-28 03:20:46,188 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:20:46,189 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/sv-benchmarks/c/recursive/Fibonacci02.c [2020-11-28 03:20:46,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/bin/uautomizer/data/7950cf444/c73b4d559f3f471c84d7c9bbca150dab/FLAG878c60fee [2020-11-28 03:20:46,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/bin/uautomizer/data/7950cf444/c73b4d559f3f471c84d7c9bbca150dab [2020-11-28 03:20:46,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:20:46,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:20:46,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:46,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:20:46,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:20:46,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:46" (1/1) ... [2020-11-28 03:20:46,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793eab29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:46, skipping insertion in model container [2020-11-28 03:20:46,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:46" (1/1) ... [2020-11-28 03:20:46,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:20:46,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:20:46,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:46,751 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:20:46,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:46,803 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:20:46,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:46 WrapperNode [2020-11-28 03:20:46,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:46,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:46,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:20:46,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:20:46,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:46" (1/1) ... [2020-11-28 03:20:46,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:46" (1/1) ... [2020-11-28 03:20:46,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:46,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:20:46,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:20:46,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:20:46,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:46" (1/1) ... [2020-11-28 03:20:46,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:46" (1/1) ... [2020-11-28 03:20:46,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:46" (1/1) ... [2020-11-28 03:20:46,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:46" (1/1) ... [2020-11-28 03:20:46,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:46" (1/1) ... [2020-11-28 03:20:46,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:46" (1/1) ... [2020-11-28 03:20:46,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:46" (1/1) ... [2020-11-28 03:20:46,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:20:46,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:20:46,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:20:46,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:20:46,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:20:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-11-28 03:20:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-11-28 03:20:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:20:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:20:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:20:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:20:47,478 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:20:47,480 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:20:47,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:47 BoogieIcfgContainer [2020-11-28 03:20:47,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:20:47,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:20:47,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:20:47,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:20:47,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:20:46" (1/3) ... [2020-11-28 03:20:47,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57df88e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:47, skipping insertion in model container [2020-11-28 03:20:47,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:46" (2/3) ... [2020-11-28 03:20:47,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57df88e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:47, skipping insertion in model container [2020-11-28 03:20:47,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:47" (3/3) ... [2020-11-28 03:20:47,494 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2020-11-28 03:20:47,510 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:20:47,515 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-28 03:20:47,528 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 03:20:47,567 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:20:47,567 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:20:47,568 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:20:47,568 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:20:47,568 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:20:47,568 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:20:47,569 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:20:47,569 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:20:47,593 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-28 03:20:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:20:47,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:47,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:47,601 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:47,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:47,608 INFO L82 PathProgramCache]: Analyzing trace with hash -106871919, now seen corresponding path program 1 times [2020-11-28 03:20:47,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:47,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600142094] [2020-11-28 03:20:47,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:47,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600142094] [2020-11-28 03:20:47,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:47,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:20:47,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548595137] [2020-11-28 03:20:47,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:47,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:47,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:47,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:47,899 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-11-28 03:20:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:48,122 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-11-28 03:20:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:48,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-28 03:20:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:48,137 INFO L225 Difference]: With dead ends: 34 [2020-11-28 03:20:48,137 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 03:20:48,142 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 [2020-11-28 03:20:48,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 03:20:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-28 03:20:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:20:48,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-28 03:20:48,193 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2020-11-28 03:20:48,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:48,194 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-28 03:20:48,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:48,194 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-28 03:20:48,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:20:48,197 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:48,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:48,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:20:48,201 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:48,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:48,204 INFO L82 PathProgramCache]: Analyzing trace with hash 981937849, now seen corresponding path program 1 times [2020-11-28 03:20:48,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:48,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948438904] [2020-11-28 03:20:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:48,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948438904] [2020-11-28 03:20:48,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:48,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:20:48,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140640598] [2020-11-28 03:20:48,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:20:48,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:48,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:20:48,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:20:48,303 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 3 states. [2020-11-28 03:20:48,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:48,339 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-11-28 03:20:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:20:48,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 03:20:48,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:48,343 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:20:48,344 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 03:20:48,345 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 [2020-11-28 03:20:48,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 03:20:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-11-28 03:20:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:20:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-28 03:20:48,361 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2020-11-28 03:20:48,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:48,362 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-28 03:20:48,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:20:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-28 03:20:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 03:20:48,365 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:48,366 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:48,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:20:48,367 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:48,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:48,368 INFO L82 PathProgramCache]: Analyzing trace with hash -590814878, now seen corresponding path program 1 times [2020-11-28 03:20:48,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:48,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324418592] [2020-11-28 03:20:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:48,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:20:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:48,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-28 03:20:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-28 03:20:48,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324418592] [2020-11-28 03:20:48,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:48,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:20:48,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174432850] [2020-11-28 03:20:48,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:48,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:48,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:48,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:48,578 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-11-28 03:20:48,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:48,707 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-11-28 03:20:48,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:48,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-28 03:20:48,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:48,711 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:20:48,712 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 03:20:48,713 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 [2020-11-28 03:20:48,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 03:20:48,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2020-11-28 03:20:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 03:20:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-11-28 03:20:48,733 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2020-11-28 03:20:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:48,733 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-11-28 03:20:48,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-11-28 03:20:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:20:48,736 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:48,736 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] [2020-11-28 03:20:48,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:20:48,741 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:48,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1123986896, now seen corresponding path program 1 times [2020-11-28 03:20:48,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:48,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006874851] [2020-11-28 03:20:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:20:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-28 03:20:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-28 03:20:48,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006874851] [2020-11-28 03:20:48,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879418692] [2020-11-28 03:20:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:20:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:48,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:20:49,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:49,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:20:49,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 13 [2020-11-28 03:20:49,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098202466] [2020-11-28 03:20:49,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:20:49,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:49,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:20:49,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:20:49,280 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 13 states. [2020-11-28 03:20:49,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:49,953 INFO L93 Difference]: Finished difference Result 126 states and 172 transitions. [2020-11-28 03:20:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:20:49,954 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-11-28 03:20:49,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:49,957 INFO L225 Difference]: With dead ends: 126 [2020-11-28 03:20:49,957 INFO L226 Difference]: Without dead ends: 93 [2020-11-28 03:20:49,960 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 [2020-11-28 03:20:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-28 03:20:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-11-28 03:20:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-28 03:20:49,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2020-11-28 03:20:49,999 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 30 [2020-11-28 03:20:50,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:50,000 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2020-11-28 03:20:50,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:20:50,000 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2020-11-28 03:20:50,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 03:20:50,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:50,004 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:50,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:50,232 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:50,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:50,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1103541404, now seen corresponding path program 1 times [2020-11-28 03:20:50,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:50,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644254497] [2020-11-28 03:20:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:50,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:20:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:50,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:20:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-28 03:20:50,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644254497] [2020-11-28 03:20:50,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:50,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:20:50,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797061604] [2020-11-28 03:20:50,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:50,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:50,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:50,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:50,321 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand 5 states. [2020-11-28 03:20:50,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:50,405 INFO L93 Difference]: Finished difference Result 107 states and 159 transitions. [2020-11-28 03:20:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:50,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-28 03:20:50,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:50,409 INFO L225 Difference]: With dead ends: 107 [2020-11-28 03:20:50,409 INFO L226 Difference]: Without dead ends: 105 [2020-11-28 03:20:50,410 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 [2020-11-28 03:20:50,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-28 03:20:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2020-11-28 03:20:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-28 03:20:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 145 transitions. [2020-11-28 03:20:50,437 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 145 transitions. Word has length 31 [2020-11-28 03:20:50,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:50,437 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 145 transitions. [2020-11-28 03:20:50,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:50,438 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 145 transitions. [2020-11-28 03:20:50,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 03:20:50,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:50,440 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] [2020-11-28 03:20:50,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:20:50,441 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:50,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:50,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1534696655, now seen corresponding path program 2 times [2020-11-28 03:20:50,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:50,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297246340] [2020-11-28 03:20:50,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:50,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-28 03:20:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:50,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-28 03:20:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-28 03:20:50,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297246340] [2020-11-28 03:20:50,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105831876] [2020-11-28 03:20:50,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:20:50,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:20:50,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:20:50,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:20:50,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-28 03:20:50,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:20:50,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2020-11-28 03:20:50,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065070368] [2020-11-28 03:20:50,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:50,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:50,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:50,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:20:50,770 INFO L87 Difference]: Start difference. First operand 97 states and 145 transitions. Second operand 5 states. [2020-11-28 03:20:50,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:50,844 INFO L93 Difference]: Finished difference Result 105 states and 153 transitions. [2020-11-28 03:20:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:50,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-11-28 03:20:50,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:50,848 INFO L225 Difference]: With dead ends: 105 [2020-11-28 03:20:50,848 INFO L226 Difference]: Without dead ends: 104 [2020-11-28 03:20:50,849 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 [2020-11-28 03:20:50,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-28 03:20:50,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2020-11-28 03:20:50,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-28 03:20:50,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 147 transitions. [2020-11-28 03:20:50,875 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 147 transitions. Word has length 36 [2020-11-28 03:20:50,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:50,875 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 147 transitions. [2020-11-28 03:20:50,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:50,876 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 147 transitions. [2020-11-28 03:20:50,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-28 03:20:50,878 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:50,878 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] [2020-11-28 03:20:51,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:51,080 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:51,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:51,081 INFO L82 PathProgramCache]: Analyzing trace with hash 215196684, now seen corresponding path program 1 times [2020-11-28 03:20:51,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:51,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570358313] [2020-11-28 03:20:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:51,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:20:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:51,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-28 03:20:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:51,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-28 03:20:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-28 03:20:51,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570358313] [2020-11-28 03:20:51,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459304092] [2020-11-28 03:20:51,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:20:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:51,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:20:51,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 34 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-28 03:20:51,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:20:51,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 13 [2020-11-28 03:20:51,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097279497] [2020-11-28 03:20:51,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:20:51,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:51,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:20:51,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:20:51,392 INFO L87 Difference]: Start difference. First operand 99 states and 147 transitions. Second operand 13 states. [2020-11-28 03:20:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:51,991 INFO L93 Difference]: Finished difference Result 186 states and 280 transitions. [2020-11-28 03:20:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:20:51,993 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-11-28 03:20:51,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:51,995 INFO L225 Difference]: With dead ends: 186 [2020-11-28 03:20:51,995 INFO L226 Difference]: Without dead ends: 119 [2020-11-28 03:20:51,998 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 [2020-11-28 03:20:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-28 03:20:52,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2020-11-28 03:20:52,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-28 03:20:52,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 155 transitions. [2020-11-28 03:20:52,014 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 155 transitions. Word has length 46 [2020-11-28 03:20:52,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:52,014 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 155 transitions. [2020-11-28 03:20:52,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:20:52,014 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 155 transitions. [2020-11-28 03:20:52,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-28 03:20:52,023 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:52,023 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] [2020-11-28 03:20:52,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:52,231 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:52,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:52,232 INFO L82 PathProgramCache]: Analyzing trace with hash -693319985, now seen corresponding path program 1 times [2020-11-28 03:20:52,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:52,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290992696] [2020-11-28 03:20:52,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:52,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-28 03:20:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:52,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-28 03:20:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:52,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:20:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:52,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:20:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-11-28 03:20:52,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290992696] [2020-11-28 03:20:52,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692493026] [2020-11-28 03:20:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:20:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:52,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:20:52,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 60 proven. 44 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-28 03:20:52,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:20:52,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13] total 16 [2020-11-28 03:20:52,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373228506] [2020-11-28 03:20:52,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-28 03:20:52,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:52,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-28 03:20:52,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:20:52,782 INFO L87 Difference]: Start difference. First operand 101 states and 155 transitions. Second operand 16 states. [2020-11-28 03:20:53,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:53,388 INFO L93 Difference]: Finished difference Result 262 states and 422 transitions. [2020-11-28 03:20:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 03:20:53,389 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2020-11-28 03:20:53,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:53,391 INFO L225 Difference]: With dead ends: 262 [2020-11-28 03:20:53,391 INFO L226 Difference]: Without dead ends: 176 [2020-11-28 03:20:53,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-11-28 03:20:53,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-11-28 03:20:53,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 156. [2020-11-28 03:20:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-28 03:20:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 232 transitions. [2020-11-28 03:20:53,426 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 232 transitions. Word has length 62 [2020-11-28 03:20:53,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:53,428 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 232 transitions. [2020-11-28 03:20:53,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-28 03:20:53,428 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 232 transitions. [2020-11-28 03:20:53,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-28 03:20:53,434 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:53,435 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] [2020-11-28 03:20:53,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:53,636 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:53,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:53,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1162938815, now seen corresponding path program 2 times [2020-11-28 03:20:53,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:53,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105375039] [2020-11-28 03:20:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:53,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-28 03:20:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:53,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-28 03:20:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:53,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:20:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:53,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-28 03:20:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 107 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 03:20:53,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105375039] [2020-11-28 03:20:53,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104608635] [2020-11-28 03:20:53,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:20:53,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:20:53,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:20:53,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:20:53,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 58 proven. 48 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-28 03:20:54,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:20:54,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-28 03:20:54,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93394877] [2020-11-28 03:20:54,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 03:20:54,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:54,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 03:20:54,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:20:54,012 INFO L87 Difference]: Start difference. First operand 156 states and 232 transitions. Second operand 14 states. [2020-11-28 03:20:54,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:54,352 INFO L93 Difference]: Finished difference Result 285 states and 425 transitions. [2020-11-28 03:20:54,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:20:54,352 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-11-28 03:20:54,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:54,354 INFO L225 Difference]: With dead ends: 285 [2020-11-28 03:20:54,355 INFO L226 Difference]: Without dead ends: 157 [2020-11-28 03:20:54,357 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 [2020-11-28 03:20:54,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-28 03:20:54,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2020-11-28 03:20:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-28 03:20:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 215 transitions. [2020-11-28 03:20:54,381 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 215 transitions. Word has length 62 [2020-11-28 03:20:54,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:54,381 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 215 transitions. [2020-11-28 03:20:54,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 03:20:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 215 transitions. [2020-11-28 03:20:54,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-28 03:20:54,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:54,384 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] [2020-11-28 03:20:54,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:54,599 INFO L429 AbstractCegarLoop]: === Iteration 10 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:54,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:54,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1938920684, now seen corresponding path program 1 times [2020-11-28 03:20:54,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:54,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038431761] [2020-11-28 03:20:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:54,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-28 03:20:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:54,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-28 03:20:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:54,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:20:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:54,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:20:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-11-28 03:20:54,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038431761] [2020-11-28 03:20:54,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112167523] [2020-11-28 03:20:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:20:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:54,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:20:54,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 72 proven. 70 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-28 03:20:54,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:20:54,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15] total 18 [2020-11-28 03:20:54,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108459527] [2020-11-28 03:20:54,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-28 03:20:54,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:54,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-28 03:20:54,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:20:54,965 INFO L87 Difference]: Start difference. First operand 149 states and 215 transitions. Second operand 18 states. [2020-11-28 03:20:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:55,661 INFO L93 Difference]: Finished difference Result 335 states and 505 transitions. [2020-11-28 03:20:55,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-28 03:20:55,662 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2020-11-28 03:20:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:55,664 INFO L225 Difference]: With dead ends: 335 [2020-11-28 03:20:55,664 INFO L226 Difference]: Without dead ends: 201 [2020-11-28 03:20:55,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-11-28 03:20:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-11-28 03:20:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 175. [2020-11-28 03:20:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-11-28 03:20:55,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 244 transitions. [2020-11-28 03:20:55,697 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 244 transitions. Word has length 69 [2020-11-28 03:20:55,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:55,697 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 244 transitions. [2020-11-28 03:20:55,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-28 03:20:55,698 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 244 transitions. [2020-11-28 03:20:55,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-28 03:20:55,701 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:55,701 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] [2020-11-28 03:20:55,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:55,927 INFO L429 AbstractCegarLoop]: === Iteration 11 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:55,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:55,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1087520634, now seen corresponding path program 3 times [2020-11-28 03:20:55,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:55,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508420025] [2020-11-28 03:20:55,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:56,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-28 03:20:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:56,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-28 03:20:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:56,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:20:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:56,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-28 03:20:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 2 proven. 145 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 03:20:56,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508420025] [2020-11-28 03:20:56,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224358880] [2020-11-28 03:20:56,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:20:56,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 03:20:56,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:20:56,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:20:56,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-11-28 03:20:56,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:20:56,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 20 [2020-11-28 03:20:56,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372902572] [2020-11-28 03:20:56,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-28 03:20:56,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:56,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-28 03:20:56,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:20:56,402 INFO L87 Difference]: Start difference. First operand 175 states and 244 transitions. Second operand 20 states. [2020-11-28 03:20:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:57,078 INFO L93 Difference]: Finished difference Result 347 states and 517 transitions. [2020-11-28 03:20:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-28 03:20:57,079 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2020-11-28 03:20:57,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:57,081 INFO L225 Difference]: With dead ends: 347 [2020-11-28 03:20:57,081 INFO L226 Difference]: Without dead ends: 187 [2020-11-28 03:20:57,084 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 [2020-11-28 03:20:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-28 03:20:57,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 177. [2020-11-28 03:20:57,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-11-28 03:20:57,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 239 transitions. [2020-11-28 03:20:57,099 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 239 transitions. Word has length 68 [2020-11-28 03:20:57,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:57,099 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 239 transitions. [2020-11-28 03:20:57,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-28 03:20:57,100 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 239 transitions. [2020-11-28 03:20:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-28 03:20:57,101 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:57,101 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] [2020-11-28 03:20:57,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:57,316 INFO L429 AbstractCegarLoop]: === Iteration 12 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:57,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:57,317 INFO L82 PathProgramCache]: Analyzing trace with hash -564936898, now seen corresponding path program 1 times [2020-11-28 03:20:57,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:57,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007090565] [2020-11-28 03:20:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:57,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-28 03:20:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:57,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:20:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:57,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:20:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:57,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:20:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 2 proven. 247 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-28 03:20:57,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007090565] [2020-11-28 03:20:57,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271759943] [2020-11-28 03:20:57,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:20:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:57,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-28 03:20:57,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 99 proven. 147 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-28 03:20:57,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:20:57,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-28 03:20:57,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464434021] [2020-11-28 03:20:57,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-28 03:20:57,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:57,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-28 03:20:57,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:20:57,751 INFO L87 Difference]: Start difference. First operand 177 states and 239 transitions. Second operand 20 states. [2020-11-28 03:20:58,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:58,366 INFO L93 Difference]: Finished difference Result 416 states and 603 transitions. [2020-11-28 03:20:58,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-28 03:20:58,367 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 81 [2020-11-28 03:20:58,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:58,369 INFO L225 Difference]: With dead ends: 416 [2020-11-28 03:20:58,369 INFO L226 Difference]: Without dead ends: 254 [2020-11-28 03:20:58,373 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 [2020-11-28 03:20:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-11-28 03:20:58,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 227. [2020-11-28 03:20:58,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-11-28 03:20:58,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 306 transitions. [2020-11-28 03:20:58,402 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 306 transitions. Word has length 81 [2020-11-28 03:20:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:58,404 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 306 transitions. [2020-11-28 03:20:58,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-28 03:20:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 306 transitions. [2020-11-28 03:20:58,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-28 03:20:58,406 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:58,407 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 10, 10, 10, 10, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:58,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 03:20:58,644 INFO L429 AbstractCegarLoop]: === Iteration 13 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:58,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1566581832, now seen corresponding path program 2 times [2020-11-28 03:20:58,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:58,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949588064] [2020-11-28 03:20:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:58,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-11-28 03:20:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:58,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-28 03:20:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:58,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:20:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:58,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:20:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 218 proven. 139 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-28 03:20:58,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949588064] [2020-11-28 03:20:58,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160126509] [2020-11-28 03:20:58,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:20:59,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:20:59,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:20:59,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-28 03:20:59,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 339 proven. 27 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-28 03:20:59,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:20:59,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 24 [2020-11-28 03:20:59,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814690736] [2020-11-28 03:20:59,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-28 03:20:59,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:59,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-28 03:20:59,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-11-28 03:20:59,117 INFO L87 Difference]: Start difference. First operand 227 states and 306 transitions. Second operand 24 states. [2020-11-28 03:20:59,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:59,951 INFO L93 Difference]: Finished difference Result 430 states and 588 transitions. [2020-11-28 03:20:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-28 03:20:59,952 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 93 [2020-11-28 03:20:59,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:59,954 INFO L225 Difference]: With dead ends: 430 [2020-11-28 03:20:59,954 INFO L226 Difference]: Without dead ends: 214 [2020-11-28 03:20:59,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=557, Invalid=1335, Unknown=0, NotChecked=0, Total=1892 [2020-11-28 03:20:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-11-28 03:20:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2020-11-28 03:20:59,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-28 03:20:59,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 243 transitions. [2020-11-28 03:20:59,978 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 243 transitions. Word has length 93 [2020-11-28 03:20:59,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:59,979 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 243 transitions. [2020-11-28 03:20:59,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-28 03:20:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 243 transitions. [2020-11-28 03:20:59,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-28 03:20:59,985 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:59,986 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] [2020-11-28 03:21:00,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:00,211 INFO L429 AbstractCegarLoop]: === Iteration 14 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:00,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:00,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1742396462, now seen corresponding path program 4 times [2020-11-28 03:21:00,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:00,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962001901] [2020-11-28 03:21:00,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:00,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-28 03:21:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:00,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:00,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-28 03:21:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:00,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-11-28 03:21:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-11-28 03:21:00,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962001901] [2020-11-28 03:21:00,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894744773] [2020-11-28 03:21:00,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:21:00,329 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:21:00,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:00,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-28 03:21:00,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 42 proven. 202 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 03:21:00,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:00,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 20] total 23 [2020-11-28 03:21:00,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439698321] [2020-11-28 03:21:00,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-28 03:21:00,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:00,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-28 03:21:00,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-11-28 03:21:00,660 INFO L87 Difference]: Start difference. First operand 202 states and 243 transitions. Second operand 23 states. [2020-11-28 03:21:01,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:01,239 INFO L93 Difference]: Finished difference Result 329 states and 399 transitions. [2020-11-28 03:21:01,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-28 03:21:01,240 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-11-28 03:21:01,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:01,241 INFO L225 Difference]: With dead ends: 329 [2020-11-28 03:21:01,241 INFO L226 Difference]: Without dead ends: 142 [2020-11-28 03:21:01,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2020-11-28 03:21:01,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-28 03:21:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 130. [2020-11-28 03:21:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-28 03:21:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-11-28 03:21:01,255 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 79 [2020-11-28 03:21:01,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:01,255 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-11-28 03:21:01,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-28 03:21:01,256 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-11-28 03:21:01,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 03:21:01,257 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:01,257 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] [2020-11-28 03:21:01,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:01,475 INFO L429 AbstractCegarLoop]: === Iteration 15 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:01,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:01,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1709732714, now seen corresponding path program 5 times [2020-11-28 03:21:01,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:01,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260282095] [2020-11-28 03:21:01,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:01,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-28 03:21:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:01,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:01,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:01,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-11-28 03:21:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-11-28 03:21:01,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260282095] [2020-11-28 03:21:01,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324445897] [2020-11-28 03:21:01,582 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:21:01,634 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-28 03:21:01,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:01,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:21:01,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-11-28 03:21:01,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:01,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-11-28 03:21:01,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086743304] [2020-11-28 03:21:01,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:21:01,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:01,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:21:01,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:21:01,694 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 10 states. [2020-11-28 03:21:01,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:01,770 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions. [2020-11-28 03:21:01,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:21:01,771 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-11-28 03:21:01,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:01,772 INFO L225 Difference]: With dead ends: 132 [2020-11-28 03:21:01,772 INFO L226 Difference]: Without dead ends: 131 [2020-11-28 03:21:01,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:21:01,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-28 03:21:01,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2020-11-28 03:21:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-28 03:21:01,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 148 transitions. [2020-11-28 03:21:01,779 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 148 transitions. Word has length 80 [2020-11-28 03:21:01,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:01,780 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 148 transitions. [2020-11-28 03:21:01,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:21:01,780 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 148 transitions. [2020-11-28 03:21:01,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-28 03:21:01,781 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:01,781 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] [2020-11-28 03:21:01,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-28 03:21:01,996 INFO L429 AbstractCegarLoop]: === Iteration 16 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:01,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:01,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1462106636, now seen corresponding path program 2 times [2020-11-28 03:21:01,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:01,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643882258] [2020-11-28 03:21:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-28 03:21:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-11-28 03:21:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-11-28 03:21:02,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643882258] [2020-11-28 03:21:02,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:02,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:21:02,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496784233] [2020-11-28 03:21:02,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:21:02,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:02,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:21:02,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:21:02,076 INFO L87 Difference]: Start difference. First operand 130 states and 148 transitions. Second operand 5 states. [2020-11-28 03:21:02,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:02,115 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2020-11-28 03:21:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:21:02,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-11-28 03:21:02,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:02,117 INFO L225 Difference]: With dead ends: 131 [2020-11-28 03:21:02,117 INFO L226 Difference]: Without dead ends: 130 [2020-11-28 03:21:02,118 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 [2020-11-28 03:21:02,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-11-28 03:21:02,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-11-28 03:21:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-28 03:21:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 147 transitions. [2020-11-28 03:21:02,130 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 147 transitions. Word has length 81 [2020-11-28 03:21:02,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:02,131 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 147 transitions. [2020-11-28 03:21:02,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:21:02,131 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 147 transitions. [2020-11-28 03:21:02,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-28 03:21:02,132 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:02,133 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] [2020-11-28 03:21:02,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 03:21:02,133 INFO L429 AbstractCegarLoop]: === Iteration 17 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:02,133 INFO L82 PathProgramCache]: Analyzing trace with hash 184820579, now seen corresponding path program 6 times [2020-11-28 03:21:02,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:02,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091401587] [2020-11-28 03:21:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-28 03:21:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-28 03:21:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-11-28 03:21:02,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091401587] [2020-11-28 03:21:02,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545540876] [2020-11-28 03:21:02,324 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:21:02,399 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-28 03:21:02,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:02,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:21:02,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-11-28 03:21:02,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:02,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-11-28 03:21:02,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760184178] [2020-11-28 03:21:02,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:21:02,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:02,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:21:02,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:21:02,503 INFO L87 Difference]: Start difference. First operand 130 states and 147 transitions. Second operand 13 states. [2020-11-28 03:21:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:02,598 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2020-11-28 03:21:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:21:02,599 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 113 [2020-11-28 03:21:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:02,600 INFO L225 Difference]: With dead ends: 132 [2020-11-28 03:21:02,601 INFO L226 Difference]: Without dead ends: 131 [2020-11-28 03:21:02,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:21:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-28 03:21:02,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2020-11-28 03:21:02,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-28 03:21:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 146 transitions. [2020-11-28 03:21:02,610 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 146 transitions. Word has length 113 [2020-11-28 03:21:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:02,611 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 146 transitions. [2020-11-28 03:21:02,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:21:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 146 transitions. [2020-11-28 03:21:02,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-11-28 03:21:02,612 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:02,612 INFO L422 BasicCegarLoop]: trace histogram [14, 12, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2020-11-28 03:21:02,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-28 03:21:02,827 INFO L429 AbstractCegarLoop]: === Iteration 18 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:02,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:02,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1434470707, now seen corresponding path program 3 times [2020-11-28 03:21:02,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:02,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926535129] [2020-11-28 03:21:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-28 03:21:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-28 03:21:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:02,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-11-28 03:21:03,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926535129] [2020-11-28 03:21:03,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076257849] [2020-11-28 03:21:03,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:21:03,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-28 03:21:03,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:03,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:21:03,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2020-11-28 03:21:03,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:03,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2020-11-28 03:21:03,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633712302] [2020-11-28 03:21:03,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:21:03,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:03,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:21:03,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:21:03,126 INFO L87 Difference]: Start difference. First operand 130 states and 146 transitions. Second operand 13 states. [2020-11-28 03:21:03,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:03,239 INFO L93 Difference]: Finished difference Result 130 states and 146 transitions. [2020-11-28 03:21:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:21:03,239 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-11-28 03:21:03,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:03,240 INFO L225 Difference]: With dead ends: 130 [2020-11-28 03:21:03,240 INFO L226 Difference]: Without dead ends: 128 [2020-11-28 03:21:03,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:21:03,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-28 03:21:03,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-28 03:21:03,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 03:21:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2020-11-28 03:21:03,249 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 114 [2020-11-28 03:21:03,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:03,249 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2020-11-28 03:21:03,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:21:03,249 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2020-11-28 03:21:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-28 03:21:03,251 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:03,251 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] [2020-11-28 03:21:03,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-28 03:21:03,467 INFO L429 AbstractCegarLoop]: === Iteration 19 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:03,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:03,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1759322589, now seen corresponding path program 7 times [2020-11-28 03:21:03,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:03,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757806274] [2020-11-28 03:21:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-28 03:21:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-28 03:21:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2020-11-28 03:21:03,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757806274] [2020-11-28 03:21:03,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465372766] [2020-11-28 03:21:03,762 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:21:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:03,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-28 03:21:03,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2020-11-28 03:21:04,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:04,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2020-11-28 03:21:04,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620287486] [2020-11-28 03:21:04,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-28 03:21:04,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:04,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-28 03:21:04,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:21:04,017 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand 17 states. [2020-11-28 03:21:04,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:04,088 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-11-28 03:21:04,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:21:04,089 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 166 [2020-11-28 03:21:04,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:04,091 INFO L225 Difference]: With dead ends: 129 [2020-11-28 03:21:04,091 INFO L226 Difference]: Without dead ends: 128 [2020-11-28 03:21:04,091 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 [2020-11-28 03:21:04,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-28 03:21:04,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-28 03:21:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 03:21:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2020-11-28 03:21:04,099 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 166 [2020-11-28 03:21:04,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:04,100 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2020-11-28 03:21:04,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-28 03:21:04,100 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2020-11-28 03:21:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-11-28 03:21:04,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:04,104 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] [2020-11-28 03:21:04,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:04,319 INFO L429 AbstractCegarLoop]: === Iteration 20 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:04,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:04,320 INFO L82 PathProgramCache]: Analyzing trace with hash 354520261, now seen corresponding path program 8 times [2020-11-28 03:21:04,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:04,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239755702] [2020-11-28 03:21:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-28 03:21:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-28 03:21:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-11-28 03:21:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:04,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 272 proven. 389 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2020-11-28 03:21:04,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239755702] [2020-11-28 03:21:04,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454464276] [2020-11-28 03:21:04,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:21:04,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:21:04,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:04,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 49 conjunts are in the unsatisfiable core [2020-11-28 03:21:04,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 272 proven. 389 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2020-11-28 03:21:05,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:05,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 20 [2020-11-28 03:21:05,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744938727] [2020-11-28 03:21:05,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-28 03:21:05,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:05,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-28 03:21:05,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-11-28 03:21:05,261 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand 21 states. [2020-11-28 03:21:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:05,355 INFO L93 Difference]: Finished difference Result 129 states and 138 transitions. [2020-11-28 03:21:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-28 03:21:05,356 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 258 [2020-11-28 03:21:05,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:05,357 INFO L225 Difference]: With dead ends: 129 [2020-11-28 03:21:05,357 INFO L226 Difference]: Without dead ends: 128 [2020-11-28 03:21:05,358 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 [2020-11-28 03:21:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-28 03:21:05,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-28 03:21:05,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 03:21:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 137 transitions. [2020-11-28 03:21:05,365 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 137 transitions. Word has length 258 [2020-11-28 03:21:05,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:05,366 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 137 transitions. [2020-11-28 03:21:05,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-28 03:21:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 137 transitions. [2020-11-28 03:21:05,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-11-28 03:21:05,373 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:05,373 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] [2020-11-28 03:21:05,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:05,574 INFO L429 AbstractCegarLoop]: === Iteration 21 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:05,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:05,574 INFO L82 PathProgramCache]: Analyzing trace with hash 703496626, now seen corresponding path program 9 times [2020-11-28 03:21:05,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:05,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087171296] [2020-11-28 03:21:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:05,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-28 03:21:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:05,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:05,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:05,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:05,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:05,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:05,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-28 03:21:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-28 03:21:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-11-28 03:21:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-28 03:21:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2020-11-28 03:21:06,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087171296] [2020-11-28 03:21:06,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003293113] [2020-11-28 03:21:06,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:21:06,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2020-11-28 03:21:06,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:06,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 81 conjunts are in the unsatisfiable core [2020-11-28 03:21:06,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2020-11-28 03:21:07,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:07,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 24 [2020-11-28 03:21:07,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127034025] [2020-11-28 03:21:07,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-28 03:21:07,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:07,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-28 03:21:07,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2020-11-28 03:21:07,167 INFO L87 Difference]: Start difference. First operand 128 states and 137 transitions. Second operand 25 states. [2020-11-28 03:21:07,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:07,280 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2020-11-28 03:21:07,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-28 03:21:07,281 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 409 [2020-11-28 03:21:07,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:07,283 INFO L225 Difference]: With dead ends: 129 [2020-11-28 03:21:07,283 INFO L226 Difference]: Without dead ends: 128 [2020-11-28 03:21:07,283 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 [2020-11-28 03:21:07,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-28 03:21:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-28 03:21:07,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 03:21:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2020-11-28 03:21:07,290 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 409 [2020-11-28 03:21:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:07,290 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2020-11-28 03:21:07,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-28 03:21:07,291 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2020-11-28 03:21:07,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2020-11-28 03:21:07,309 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:07,309 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] [2020-11-28 03:21:07,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:07,531 INFO L429 AbstractCegarLoop]: === Iteration 22 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:07,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:07,532 INFO L82 PathProgramCache]: Analyzing trace with hash 111724450, now seen corresponding path program 10 times [2020-11-28 03:21:07,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:07,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708982593] [2020-11-28 03:21:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:07,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:07,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:07,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-28 03:21:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-28 03:21:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-28 03:21:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-28 03:21:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-11-28 03:21:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-28 03:21:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-28 03:21:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:08,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 15678 backedges. 2390 proven. 2946 refuted. 0 times theorem prover too weak. 10342 trivial. 0 not checked. [2020-11-28 03:21:09,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708982593] [2020-11-28 03:21:09,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631182900] [2020-11-28 03:21:09,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:21:09,639 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:21:09,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:09,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 133 conjunts are in the unsatisfiable core [2020-11-28 03:21:09,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 15678 backedges. 2390 proven. 2946 refuted. 0 times theorem prover too weak. 10342 trivial. 0 not checked. [2020-11-28 03:21:10,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:10,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 28 [2020-11-28 03:21:10,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148556273] [2020-11-28 03:21:10,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-28 03:21:10,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:10,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-28 03:21:10,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-11-28 03:21:10,411 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand 29 states. [2020-11-28 03:21:10,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:10,516 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2020-11-28 03:21:10,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-28 03:21:10,517 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 658 [2020-11-28 03:21:10,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:10,519 INFO L225 Difference]: With dead ends: 129 [2020-11-28 03:21:10,519 INFO L226 Difference]: Without dead ends: 128 [2020-11-28 03:21:10,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 895 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-11-28 03:21:10,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-28 03:21:10,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-28 03:21:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 03:21:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2020-11-28 03:21:10,528 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 658 [2020-11-28 03:21:10,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:10,529 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2020-11-28 03:21:10,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-28 03:21:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2020-11-28 03:21:10,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2020-11-28 03:21:10,544 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:10,545 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] [2020-11-28 03:21:10,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-28 03:21:10,745 INFO L429 AbstractCegarLoop]: === Iteration 23 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:10,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:10,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1256529780, now seen corresponding path program 11 times [2020-11-28 03:21:10,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:10,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911508110] [2020-11-28 03:21:10,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-28 03:21:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-28 03:21:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-28 03:21:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:11,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-28 03:21:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-28 03:21:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-11-28 03:21:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-28 03:21:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-28 03:21:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:12,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2020-11-28 03:21:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-28 03:21:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-28 03:21:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-28 03:21:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-28 03:21:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:21:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:21:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:13,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-28 03:21:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2020-11-28 03:21:14,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911508110] [2020-11-28 03:21:14,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975306786] [2020-11-28 03:21:14,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/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 [2020-11-28 03:21:15,172 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 83 check-sat command(s) [2020-11-28 03:21:15,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:15,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 217 conjunts are in the unsatisfiable core [2020-11-28 03:21:15,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2020-11-28 03:21:16,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:16,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 32 [2020-11-28 03:21:16,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955335464] [2020-11-28 03:21:16,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-28 03:21:16,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:16,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-28 03:21:16,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-11-28 03:21:16,588 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand 33 states. [2020-11-28 03:21:16,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:16,753 INFO L93 Difference]: Finished difference Result 128 states and 135 transitions. [2020-11-28 03:21:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-28 03:21:16,753 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1064 [2020-11-28 03:21:16,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:16,756 INFO L225 Difference]: With dead ends: 128 [2020-11-28 03:21:16,756 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:21:16,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1496 GetRequests, 1465 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-11-28 03:21:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:21:16,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:21:16,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:21:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:21:16,757 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1064 [2020-11-28 03:21:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:16,758 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:21:16,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-28 03:21:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:21:16,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:21:16,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-28 03:21:16,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:21:17,608 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 14 [2020-11-28 03:21:18,095 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2020-11-28 03:21:18,108 INFO L274 CegarLoopResult]: For program point fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,108 INFO L274 CegarLoopResult]: For program point fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,108 INFO L274 CegarLoopResult]: For program point fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,108 INFO L274 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-11-28 03:21:18,109 INFO L274 CegarLoopResult]: For program point fibonacciEXIT(lines 16 24) no Hoare annotation was computed. [2020-11-28 03:21:18,109 INFO L274 CegarLoopResult]: For program point L17(lines 17 23) no Hoare annotation was computed. [2020-11-28 03:21:18,109 INFO L274 CegarLoopResult]: For program point fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,109 INFO L274 CegarLoopResult]: For program point fibonacciFINAL(lines 16 24) no Hoare annotation was computed. [2020-11-28 03:21:18,109 INFO L274 CegarLoopResult]: For program point fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,109 INFO L274 CegarLoopResult]: For program point fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,109 INFO L277 CegarLoopResult]: At program point fibonacciENTRY(lines 16 24) the Hoare annotation is: true [2020-11-28 03:21:18,109 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,109 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,109 INFO L270 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (and (or (not (<= |fibonacci_#in~n| 2)) (< 1 fibonacci_~n)) (or (not (<= |fibonacci_#in~n| 9)) (= fibonacci_~n |fibonacci_#in~n|))) [2020-11-28 03:21:18,109 INFO L274 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,109 INFO L274 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,109 INFO L274 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,110 INFO L270 CegarLoopResult]: At program point L22-6(line 22) the Hoare annotation is: (let ((.cse2 (<= fibonacci_~n |fibonacci_#in~n|)) (.cse1 (<= 2 |fibonacci_#t~ret7|)) (.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (and (or (not (<= |fibonacci_#in~n| 2)) (< 1 fibonacci_~n)) (or (not (<= |fibonacci_#in~n| 6)) (not (<= 6 |fibonacci_#in~n|)) (and (<= |fibonacci_#t~ret7| 5) .cse0 .cse1)) (or (and (<= |fibonacci_#t~ret7| 3) .cse0 .cse1) (not (<= |fibonacci_#in~n| 5)) (not (<= 5 |fibonacci_#in~n|))) (or (and (<= |fibonacci_#t~ret7| 21) (<= 9 fibonacci_~n) .cse1 .cse2) (not (<= |fibonacci_#in~n| 9)) (not (<= 9 |fibonacci_#in~n|))) (or (not (<= 4 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 4)) (and (<= |fibonacci_#t~ret7| 2) (<= 4 fibonacci_~n) .cse1 .cse2)) (or (and (<= |fibonacci_#t~ret7| 13) .cse0 .cse1) (not (<= |fibonacci_#in~n| 8)) (not (<= 8 |fibonacci_#in~n|))) (or (and (<= |fibonacci_#t~ret7| 8) .cse0 .cse1) (not (<= 7 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 7))) (or (and .cse0 (= |fibonacci_#t~ret7| 1)) (not (<= |fibonacci_#in~n| 3))))) [2020-11-28 03:21:18,110 INFO L274 CegarLoopResult]: For program point L22-7(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,110 INFO L274 CegarLoopResult]: For program point L22-8(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,110 INFO L274 CegarLoopResult]: For program point L22-9(line 22) no Hoare annotation was computed. [2020-11-28 03:21:18,110 INFO L274 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-11-28 03:21:18,110 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:21:18,110 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:21:18,110 INFO L274 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-11-28 03:21:18,110 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:21:18,110 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)) [2020-11-28 03:21:18,110 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:21:18,110 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-11-28 03:21:18,110 INFO L270 CegarLoopResult]: At program point L27(lines 27 35) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 9) [2020-11-28 03:21:18,110 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:21:18,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:21:18 BoogieIcfgContainer [2020-11-28 03:21:18,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:21:18,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:21:18,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:21:18,125 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:21:18,125 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:47" (3/4) ... [2020-11-28 03:21:18,129 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:21:18,134 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2020-11-28 03:21:18,143 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 03:21:18,143 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:21:18,143 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:21:18,144 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:21:18,193 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f434064a-8122-47da-9efb-9b97029449f9/bin/uautomizer/witness.graphml [2020-11-28 03:21:18,194 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:21:18,195 INFO L168 Benchmark]: Toolchain (without parser) took 31649.49 ms. Allocated memory was 88.1 MB in the beginning and 1.1 GB in the end (delta: 1.0 GB). Free memory was 58.0 MB in the beginning and 435.6 MB in the end (delta: -377.6 MB). Peak memory consumption was 638.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:18,195 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 88.1 MB. Free memory was 48.5 MB in the beginning and 48.4 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:18,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.30 ms. Allocated memory is still 88.1 MB. Free memory was 57.8 MB in the beginning and 66.8 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:18,197 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.38 ms. Allocated memory is still 88.1 MB. Free memory was 66.8 MB in the beginning and 65.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:18,197 INFO L168 Benchmark]: Boogie Preprocessor took 34.38 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 64.5 MB in the end (delta: 932.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:18,198 INFO L168 Benchmark]: RCFGBuilder took 594.79 ms. Allocated memory is still 88.1 MB. Free memory was 64.5 MB in the beginning and 52.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:18,198 INFO L168 Benchmark]: TraceAbstraction took 30638.81 ms. Allocated memory was 88.1 MB in the beginning and 1.1 GB in the end (delta: 1.0 GB). Free memory was 51.7 MB in the beginning and 437.7 MB in the end (delta: -386.0 MB). Peak memory consumption was 632.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:18,199 INFO L168 Benchmark]: Witness Printer took 69.31 ms. Allocated memory is still 1.1 GB. Free memory was 437.7 MB in the beginning and 435.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:18,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 88.1 MB. Free memory was 48.5 MB in the beginning and 48.4 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.30 ms. Allocated memory is still 88.1 MB. Free memory was 57.8 MB in the beginning and 66.8 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.38 ms. Allocated memory is still 88.1 MB. Free memory was 66.8 MB in the beginning and 65.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.38 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 64.5 MB in the end (delta: 932.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 594.79 ms. Allocated memory is still 88.1 MB. Free memory was 64.5 MB in the beginning and 52.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 30638.81 ms. Allocated memory was 88.1 MB in the beginning and 1.1 GB in the end (delta: 1.0 GB). Free memory was 51.7 MB in the beginning and 437.7 MB in the end (delta: -386.0 MB). Peak memory consumption was 632.3 MB. Max. memory is 16.1 GB. * Witness Printer took 69.31 ms. Allocated memory is still 1.1 GB. Free memory was 437.7 MB in the beginning and 435.6 MB 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: 29.4s, OverallIterations: 23, TraceHistogramMax: 109, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 673 SDtfs, 2457 SDslu, 3136 SDs, 0 SdLazy, 4274 SolverSat, 797 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4909 GetRequests, 4513 SyntacticMatches, 2 SemanticMatches, 394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1699 ImplicationChecksByTransitivity, 6.2s 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: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 167 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 467 PreInvPairs, 500 NumberOfFragments, 169 HoareAnnotationTreeSize, 467 FomulaSimplifications, 258 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 5 FomulaSimplificationsInter, 846 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 7132 NumberOfCodeBlocks, 6990 NumberOfCodeBlocksAsserted, 182 NumberOfCheckSat, 7091 ConstructedInterpolants, 0 QuantifiedInterpolants, 9587833 SizeOfPredicates, 60 NumberOfNonLiveVariables, 6680 ConjunctsInSsa, 667 ConjunctsInUnsatCore, 41 InterpolantComputations, 6 PerfectInterpolantSequences, 112415/138479 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...